just 1.2kw-hr for 100km. That is very good economy. Even if it is 2kw-hr, still better than most efficient bikes on the road.
for rs 110 worth of petrol, the best petrol bike will do maybe 50 km/liter. so that is 2.2rs/km.
This bike consumes at diesel generator rate of producing electricity (~rs25/kw-hr) , just rs 50 for 100km, which means rs0.5/km. Although you still need battery replacement after maybe 2yr....